| 1 | Mulch plants to conserve soil moisture and suppress weeds. | |
| 2 | The reasonable scientific basis was provided for soil tilth optimization. | |
| 3 | The soil moisture content is usually expressed by the soil gravimetric moisture content, the soil volumetric moisture content or the soil suction. | |
| 4 | The forecast of soil moisture is the most effective way for understanding the dynamic changes of soil water and regulating the status of soil water. | |
| 5 | The soil water is influenced by underground water greatly. The areas with lower underground water level are less attacked by droughts. |